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Finding the Fourth Proportional to 71,911.52, 107,881.44 and 21,998.76

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Solution

The fourth proportional to 71,911.52, 107,881.44 and 21,998.76 is: 33,002.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,911.52 : 107,881.44 = 21,998.76 : x
  2. Step 2: Convert to fraction form
    71,911.52/107,881.44 = 21,998.76/x
  3. Step 3: Cross multiply
    71,911.52x = 107,881.44 × 21,998.76
  4. Step 4: Simplify right side
    71,911.52x = 2,373,257,907.01
  5. Step 5: Solve for x
    x = 2,373,257,907.01/71,911.52
  6. Step 6: Final answer
    x = 33,002.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.